scholarly journals Charge Trapping by a Vortex Line in Superfluid Helium

1966 ◽  
Vol 36 (3) ◽  
pp. 435-444
Author(s):  
Toshio Soda
Keyword(s):  
Superfluid Helium ◽  
Vortex Line ◽  
Charge Trapping

Quantised vortex line visualisation in superfluid helium using low-temperature optics

2003 ◽  
Vol 329-333 ◽  
pp. 220-221 ◽  
Author(s):  
James R.T. Seddon ◽  
Michael S. Thurlow ◽  
Matthew J. Lees ◽  
Peter G.J. Lucas
Keyword(s):  
Low Temperature ◽  
Superfluid Helium ◽  
Vortex Line

Free Surface of a Rotating HeII Film

1973 ◽  
Vol 51 (21) ◽  
pp. 2283-2286 ◽  
Author(s):  
E. Vittoratos ◽  
M. W. Cole ◽  
P. P. M. Meincke
Keyword(s):  
Thin Films ◽  
Free Surface ◽  
Superfluid Helium ◽  
Vortex Line ◽  
Rotational Frequency ◽  
Experimental Results ◽  
Quantized Vortex ◽  
Bulk Liquid ◽  
Vapor Interface ◽  
Vortex Lines

Stimulated by recent conflicting experimental results, we have investigated the properties of quantized vortex lines in thin films of superfluid helium. The shape of the liquid–vapor interface in the presence of a single line is calculated. The depression of the interface ("dimple") that results is considerably smaller for the film than for the bulk liquid. The critical rotational frequency for the appearance of the first vortex line is only slightly reduced below the bulk value.

Vortex-Line Density Fluctuations in Turbulent Superfluid Helium

1977 ◽  
Vol 39 (9) ◽  
pp. 565-568 ◽  
Author(s):  
J. Mantese ◽  
G. Bischoff ◽  
Frank Moss
Keyword(s):  
Superfluid Helium ◽  
Vortex Line ◽  
Density Fluctuations ◽  
Line Density

Observation of a Remanent Vortex-Line Density in Superfluid Helium

1984 ◽  
Vol 52 (1) ◽  
pp. 49-52 ◽  
Author(s):  
D. D. Awschalom ◽  
K. W. Schwarz
Keyword(s):  
Superfluid Helium ◽  
Vortex Line ◽  
Line Density

Energy spectrum of the velocity field induced by a fractal vortex line in superfluid helium

2008 ◽  
Vol 34 (4) ◽  
pp. 293-297
Author(s):  
S. K. Nemirovskiĭ ◽  
V. A. Andryushchenko
Keyword(s):  
Energy Spectrum ◽  
Velocity Field ◽  
Superfluid Helium ◽  
Vortex Line

High-Resolution Cryo-Electron Microscopy of Biological Macromolecules

1990 ◽  
Vol 48 (1) ◽  
pp. 126-127
Author(s):  
Yoshinori Fujiyoshi
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Diffraction Pattern ◽  
Superfluid Helium ◽  
Copper Phthalocyanine ◽  
Optical Diffraction ◽  
Irradiation Damage ◽  
Biological Macromolecules ◽  
Cross Sectional ◽  
Instrumental Resolution

The resolution of direct images of biological macromolecules is normally restricted to far less than 0.3 nm. This is not due instrumental resolution, but irradiation damage. The damage to biological macromolecules may expect to be reduced when they are cooled to a very low temperature. We started to develop a new cryo-stage for a high resolution electron microscopy in 1983, and successfully constructed a superfluid helium stage for a 400 kV microscope by 1986, whereby chlorinated copper-phthalocyanine could be photographed to a resolution of 0.26 nm at a stage temperature of 1.5 K. We are continuing to develop the cryo-microscope and have developed a cryo-microscope equipped with a superfluid helium stage and new cryo-transfer device.The New cryo-microscope achieves not only improved resolution but also increased operational ease. The construction of the new super-fluid helium stage is shown in Fig. 1, where the cross sectional structure is shown parallel to an electron beam path. The capacities of LN2 tank, LHe tank and the pot are 1400 ml, 1200 ml and 3 ml, respectively. Their surfaces are placed with gold to minimize thermal radiation. Consumption rates of liquid nitrogen and liquid helium are 170 ml/hour and 140 ml/hour, respectively. The working time of this stage is more than 7 hours starting from full LN2 and LHe tanks. Instrumental resolution of our cryo-stage cooled to 4.2 K was confirmed to be 0.20 nm by an optical diffraction pattern from the image of a chlorinated copper-phthalocyanine crystal. The image and the optical diffraction pattern are shown in Fig. 2 a, b, respectively.

VISCOSITY OF NORMAL AND SUPERFLUID HELIUM THREE

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-35-C6-36 ◽  
Author(s):  
J. M. Parpia ◽  
D. J. Sandiford ◽  
J. E. Berthold ◽  
J. D. Reppy
Keyword(s):  
Superfluid Helium ◽  
Helium Three
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